Penn State, which squeaked out a 10-7 win over Illinois on Saturday, jumped four spots to No. 15 in the USA TODAY coaches' poll released Sunday.
The Nittany Lions (8-1, 5-0 Big Ten), the lone team undefeated in Big Ten play, are now ranked higher than Michigan State (No. 16) and Wisconsin (No. 17) in the coaches' poll. Nebraska is No. 9 and Michigan is No. 13.
Penn State also checked in at No. 16, five spots higher than last week, in the AP poll that was released Sunday.
Four other Big Ten teams are ranked in the AP Top 25: Nebraska (No. 9), Michigan (No. 13), Michigan State (No. 15) and Wisconsin (No. 19).
The BCS standings will be released Sunday night. Penn State was No. 19 in last week's standings.